Ken and Roberta Williams’ Sierra On-Line collection contains materials from 1979-1999, with the bulk of the materials dated between 1988 and 1995. This collection holds a sampling of Sierra On-Line’s corporate records and textual information that supplements the video game and software collection of Sierra On-Line games in the International Center for the History of Electronic Games at The Strong. Materials in this collection include corporate annual reports, press releases, game catalogs, newsletters, gaming magazines, correspondence, photographs, bound materials (such as game strategy and player’s guides), and more. Additionally, the materials on loan to The Strong consist of original Sierra On-Line game production books, script ideas, notes, drawings, flow charts, and other game design-related papers.

This collection has been arranged into four series, with two split further into subseries. The materials are housed in four boxes.